Adhesive Strength of Oxide Scale Formed on Low-Carbon Steel

概要

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The scale formed on the surface of steel during hot rolling causes surface defects. Thus, controlling scale adhesion is important; however, there have been few reports on quantitative investigations of scale adhesion at high temperature. In this study, a method of measuring scale adhesive strength at high temperature is investigated. The effect of the external stress on the oxide scale is also investigated. The adhesive strength is on the order of 1 MPa. The adhesive strength increases proportionally as axial stress applies on the scale. The scale/steel interface analysis shows that there are many voids at the interface after the oxidation, however, the number of voids decreases and a rough interface is formed after axial compression stress is applied on. It is found that the adhesive strength of the scale depends on the contact area and the rough interface between the scale and the steel.
日本塑性加工学会 ; 1960-の論文